Question

我使用这样的东西：

    $url_title = mysql_real_escape_string($_GET['title']); 
    $sql = dbquery("SELECT * FROM `videos` WHERE `post_name` = '$url_title' LIMIT 0, 1");

/* or this old one

    $local_id = ($_GET['id'];
    $sql = dbquery("SELECT * FROM `videos` WHERE `id` = '$local_id' LIMIT 0, 1");

// for urls like : 
// example.com/video/music/red-hot-chili-peppers-californication-564/

*/

    $num_rows = mysql_num_rows($sql);
    if  ($num_rows == "0"){die();}

    while($row = mysql_fetch_array($sql)){
    $local_id = $row["id"]; // PRIMARY KEY ; auto increment
    $video_id = $row["youtube_id"]; // Unique
    $title = $row["name"]; // Unique
    $name_slug = $row["name_slug"]; // Unique
    // some more code
    }

// and this one for urls like : 
// example.com/video/music/red-hot-chili-peppers-californication/

我想问的是：

当我在db中而不是“564”查询“red-hot-chili-peppers-californication”时，服务器负载是否正常？

所有字段的类型都是varchar，除了$ id，它是int。

Answer 1

我认为这是正常的。比较字符串比比较字符串更容易。在每种编程语言中。

Answer 2

全部取决于您如何为mysql列设置type

Mysql服务器重载大文本查询？

2 个答案: